XXIII Spain Olympiad in Informatics, Online Qualifier 2

4 problems from XXIII Spain Olympiad in Informatics, Online Qualifier 2 (contest 105458), difficulty -. 2/4 solutions verified against sample I/O.

4 items

XXIII Spain Olympiad in Informatics, Online Qualifier 2

Special | 4 problems | 2/4 verified | Difficulty - | 5m 28s

#	Problem	Time	✓
A	Juan's Flight	1m 4s	✓
B	The Fortune of Francis	1m 9s	✓
C	Flipping Rectangles	1m 42s
D	Professor Oak Strikes Back	1m 33s

Practice › Codeforces Solutions › XXIII Spain Olympiad in Informatics, Online Qualifier 2 ›

CF 105458D - Professor Oak Strikes Back

We are given several independent typing sessions. In each session, Professor Oak produces a long text using a very specific two-finger typing model on a fixed keyboard.

Practice › Codeforces Solutions › XXIII Spain Olympiad in Informatics, Online Qualifier 2 ›

CF 105458B - The Fortune of Francis

We are given a collection of license plates belonging to cars purchased over time by a single owner. Each plate is a fixed-format string: four digits followed by three uppercase letters.

Practice › Codeforces Solutions › XXIII Spain Olympiad in Informatics, Online Qualifier 2 ›

CF 105458A - Juan's Flight

Each test case describes Juan’s attempt to choose a single store from which he will buy three required components for a flying car: an engine, a steering wheel, and a spare tire. Every store offers all three items, but each store has different prices for them.

Practice › Codeforces Solutions › XXIII Spain Olympiad in Informatics, Online Qualifier 2 ›

CF 105458C - Flipping Rectangles

We are given a grid of size $n times m$ filled with two types of cells, black and white. The goal is to turn every cell into white using a specific operation.